Credo is an academic alternative to Wikipedia. It includes topic pages with mind maps (examples: Art Song, Lyrics, and Poetry) and specialized entries from several encyclopedias, dictionaries, and other reference sources (examples: Art Song from The New Penguin Dictionary of Music and Mahler, Gustave from The Columbia Encyclopedia).
As a reference source, it's a good place to start and to help formulate your topic.
The databases featured in this box are particularly useful for this class. You can learn more about databases on the Research Hub's Databases tab.
Try some of these subject headings in WorldCat@SU:
Popular Music | American Literature | Music, Influence of | Lyricists | Musicians | American Poetry 20th century History and criticism | Lyric poetry history and criticism | Songs, English United States History and criticism | Songs | Songs, Analysis appreciation | Folk musicians | Dylan, Bob. 1941-